Error Code List For A1Scpuc24-R2 - Mitsubishi MELSEC-A A1SCPUC24-R2 User Manual

6.2 Error Code List for A1SCPUC24-R2

Error Code
Error Message
"INSTRCT.
CODE ERR"
(Checked at the
execution of
instruction)
"PARAMETER
ERROR"
(Checked at
power-on,
STOP RUN,
and
PAUSE RUN)
"MISSING END
INS."
(Checked at
STOP RUN)
Table 6.1 Error Code List for A1SCPUC24-R2
CPU
(D9008) States
10 Stop
11 Stop
12 Stop
Error and Cause
Instruction code, which
cannot be decoded by
CPU, is included in the
program.
(1) EP-ROM or memory
cassette, which
cannot be decoded,
has been loaded.
(2) Since the memory
contents have
changed for some
reason, instruction
code, which cannot
be decoded, has
been included.
(1) Capacity larger than
the memory
capacity of CPU
module has been
set with the
peripheral
equipment and then
write to CPU module
has been
performed.
(2) The contents of
parameters of CPU
memory have
changed due to
noise or the
improper loading of
memory.
(3) RAM is not loaded
to the A1 or
A1NCPU.
(1) There is no
END
( ) instruction in
FEND
the program.
(2) When subprogram
has been set by the
parameter, there is
no instruction in
END
the subprogram.
85
Corrective Action
(1) Read the error step
by use of a
peripheral
equipment and
correct the
program at that
step.
(2) In the case of
EP-ROM or
memory cassette,
rewrite the contents
or replace with an
EP-ROM or
memory cassette
which stores
correct contents.
(1) Check the memory
capacity of CPU
with the memory
capacity set by
peripheral
equipment and
re-set incorrect
area.
(2) Check the loading
of CPU memory
and load it
correctly. Read the
parameter contents
of CPU memory,
check and correct
the contents, and
write them to CPU
again.
(3) Install the RAM and
write parameter
contents from a
peripheral device.
Write instruction at
END
the end of program.